sport.java

Java 程序设计源码 只提供了部分

interface Sport
{
        //接口中默认的权限都是：public abstract 
        void run();     //void run(); = public abstract void run();
        void jump();
}

class Athlete implements Sport
{
        public void run()
        {
                System.out.println("short run");
        }
        
        public void jump()
        {
                System.out.println("Three jump");
        }
        
        public static void main(String[] args)
        {
                Athlete zhangsan = new Athlete();
                
                zhangsan.run();
                zhangsan.jump();
        }
}